Emotionality in adolescent males is driven by hormonal changes
(Medical Xpress) -- Researchers led by a team from the University of Glasgow and Oslo University Hospital, Norway have discovered that while changes in the emotions of adolescent females are directly related to age those from young males are influenced by the changing patterns of reproductive hormones that occur as individuals become more sexually mature.
The findings are significant as a variety of medical conditions such as growth deficiency, early onset gender identity disorder and cancers in reproductive tissues, including prostate cancer are treated using drugs that temporarily turn off the reproductive system. The long term effects or side effects of these treatments, in particular when they are used on adolescents are, as yet, not known.
In the study which was conducted on 92 sheep, the University of Glasgow team working with colleagues from the Norwegian School of Veterinary Science, Oslo University Hospitaland AgroParisTech, considered what would happen if puberty did not occur by blocking changes in hormones using a common human drug treatment.
Professor Neil Evans of the University of Glasgow said, We used sheep because the time course of pubertal development is more similar to humans than laboratory rodents. As sheep are flock animals, and like to see other sheep, an easy way to test their emotional response is to place them in social isolation for a two minute period. This was done at three times, before, during and after puberty. The results showed that females had a greater emotional response than males, both before and after puberty. Interestingly the results also showed that the emotional response of males, but not females, was significantly altered when puberty was blocked.
The results suggest that changes in hormones during adolescence drive changes in the brains of males that alter emotional reactivity.
Prof Neil Evans added, The findings may have implications for the treatment of medical conditions which occur at the time of puberty, but the link between reproductive hormones and how the brain works also raises the possibility that other medical conditions that affect how we think and behave, such as Alzheimers disease, may be affected by, or could be treated with, drugs that change activity within the reproductive system.
The exact hormonal changes that bring about these alterations in behaviour, exactly how they act within the brain and whether such changes are permanent will be the subject of further studies planned by the research team.
More information: www.sciencedirect.… 453012001254
Provided by University of Glasgow
- Brain changes in adolescent males shown in new research Jan 19, 2011 | not rated yet | 0
- Study suggest chemicals in the environment could threaten male fertility May 16, 2012 | not rated yet | 0
- Researchers identify site in brain where leptin may trigger puberty Dec 22, 2010 | not rated yet | 0
- Early puberty leads to increased aggression in women Jan 11, 2010 | not rated yet | 0
- Age at puberty linked to mother's prenatal diet Jun 16, 2008 | not rated yet | 0
- Motion perception revisited: High Phi effect challenges established motion perception assumptions Apr 23, 2013 | 3 / 5 (2) | 2
- Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update) Apr 02, 2013 | 4.5 / 5 (11) | 5
- The visual system as economist: Neural resource allocation in visual adaptation Mar 30, 2013 | 5 / 5 (2) | 9
- Separate lives: Neuronal and organismal lifespans decoupled Mar 27, 2013 | 4.9 / 5 (8) | 0
- Sizing things up: The evolutionary neurobiology of scale invariance Feb 28, 2013 | 4.8 / 5 (10) | 14
How can there be a term called "intestinal metaplasia" of stomach
17 hours ago Hello everyone, Ok Stomach's normal epithelium is simple columnar, now in intestinal type of adenocarcinoma of stomach it undergoes "intestinal...
Pressure-volume curve: Elastic Recoil Pressure don't make sense
May 18, 2013 From pressure-volume curve of the lung and chest wall (attached photo), I don't understand why would the elastic recoil pressure of the lung is...
If you became brain-dead, would you want them to pull the plug?
May 17, 2013 I'd want the rest of me to stay alive. Sure it's a lousy way to live but it beats being all-the-way dead. Maybe if I make it 20 years they'll...
MRI bill question
May 15, 2013 Dear PFers, The hospital gave us a $12k bill for one MRI (head with contrast). The people I talked to at the hospital tell me that they do not...
Ratio of Hydrogen of Oxygen in Dessicated Animal Protein
May 13, 2013 As an experiment, for the past few months I've been consuming at least one portion of Jell-O or unflavored Knox gelatin per day. I'm 64, in very...
Alcohol and acetaminophen
May 13, 2013 Edit: sorry for the typo in the title , can't edit I looked around on google quite a bit and it's very hard to find precise information on the...
- More from Physics Forums - Medical Sciences
More news stories
Trends in Helicobacter pylori (H. pylori) and smoking explain a significant proportion of the decline of intestinal-type noncardia gastric adenocarcinoma (NCGA) incidence in US men between 1978 and 2008, and are estimated ...
Medical research 7 hours ago | not rated yet | 0
Widely available in pharmacies and health stores, phosphatidylserine is a natural food supplement produced from beef, oysters, and soy. Proven to improve cognition and slow memory loss, it's a popular treatment for older ...
Medical research 11 hours ago | 5 / 5 (2) | 0 |
Researchers at Emory University have identified a protein that stimulates a pair of "orphan receptors" found in the brain, solving a long-standing biological puzzle and possibly leading to future treatments for neurological ...
Medical research 12 hours ago | 5 / 5 (1) | 0 |
Australian scientists have charted the path of insulin action in cells in precise detail like never before. This provides a comprehensive blueprint for understanding what goes wrong in diabetes.
Medical research 12 hours ago | 4.5 / 5 (6) | 0 |
Researchers at the University of Illinois at Chicago College of Medicine will study gender differences in how the heart uses and stores fat—its main energy source—and how changes in fat metabolism play ...
Medical research 15 hours ago | not rated yet | 0
(Medical Xpress)—Native peoples in regions where cameras are uncommon sometimes react with caution when their picture is taken. The fear that something must have been stolen from them to create the photo ...
12 hours ago | 4.2 / 5 (5) | 0 |
(Medical Xpress)—Despite spending billions of dollars on research and development, drug companies have been unable to come up with effective treatments for dementia and Alzheimer's Disease (AD). Now, A. ...
10 hours ago | 4.9 / 5 (9) | 0 |
Activating an enzyme known to play a role in the anti-aging benefits of calorie restriction delays the loss of brain cells and preserves cognitive function in mice, according to a study published in the May ...
7 hours ago | 5 / 5 (3) | 0 |
An experimental sleeping pill from US drug company Merck is effective at helping people fall and stay asleep, according to reviewers at the US Food and Drug Administration, which could soon approve the new drug.
6 hours ago | 3 / 5 (2) | 0
A drug commonly used to treat depression and anxiety may improve a stress-related heart condition in people with stable coronary heart disease, according to researchers at Duke Medicine.
8 hours ago | 5 / 5 (1) | 0 |
Researchers at USC have found that a class of pharmaceuticals can both prevent and treat Alzheimer's Disease in mice.
9 hours ago | 5 / 5 (4) | 0 |